广西大雾天气的气候及环流形势特征  

Climate and Atmospheric Circulation Characteristics of Dense Fog in Guangxi

作　　者：李生艳[1] 周能[2] 苏洵[1] 

机构地区：[1]广西气象台,广西南宁530022 [2]广西气象科技服务中心,广西南宁530022

出　　处：《气象研究与应用》2009年第4期14-17,共4页Journal of Meteorological Research and Application

基　　金：2007年度广西气象局科研项目资助

摘　　要：利用1971～2006年广西89站大雾资料，对广西大雾的气候特征和地域特征进行分析，结果表明：广西大雾分布极不均匀，四周多，中部少，局地特征明显，表现为四个多发区和一个少发区；广西各月都可形成大雾，秋冬春季多，夏季少。雾日主要集中在11月到翌年1月，6月份最少；广西雾日的年际变化波动性很大，波动无明显周期，规律性差，总体略呈下降趋势；区域性大雾天气过程最多出现在11～12月，大多只维持1～2d，少数可维持3～5d；全区性大雾天气过程最多出现在12～1月，大多维持1～3d，少数可维持4d以上。Basing on the dense fog data of Guangxi 89 stations from 1971 to 2006, the climatic characteristics and geographical features of dense fog were analyzed. The results show that the dense fog distributions are extremely uneven, the dense fog usually occur around the periphery of Guangxi, but not in the central region, with four more-prone areas, and a less-prone one. The dense fog could appear in every month, mostly in autumn, winter and spring, summer less. The foggy days concentratively appear from November to the following January, rarely in June. And the annual variations of Foggy days show the highly volatile, with no obvious fluctuating cycle, but a slightly downward trend. Regional （the whole region） dense fog appears most frequently on Nov. and Dec. （Dec. and Jan. ）, most of them maintaining only 1-2d （1-3d）, a few 3-5d （more than 4d）.

关 键 词：大雾 气候特征 环流形势 

分 类 号：P468.028[天文地球—大气科学及气象学]